CVE-2021-23718

Name: CVE-2021-23718
Creator: NVD / NIST
Published: 2021-11-22T17:15:08.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.56%

Last modified Jun 17, 2026

CVE-2021-23718 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.. EPSS estimates a 1.56% chance of exploitation in the next 30 days.

Description

The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.56%

72.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Ssrf-Agent Project	Ssrf-Agent	< 1.0.5

References

https://github.com/welefen/ssrf-agent/blob/cec2b85fe8886ad6926a247a3e059d8369ec022b/index.js%23L13Broken Link, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0005/Third Party Advisory
https://snyk.io/vuln/SNYK-JS-SSRFAGENT-1584362Exploit, Third Party Advisory
https://github.com/welefen/ssrf-agent/blob/cec2b85fe8886ad6926a247a3e059d8369ec022b/index.js%23L13Broken Link, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0005/Third Party Advisory
https://snyk.io/vuln/SNYK-JS-SSRFAGENT-1584362Exploit, Third Party Advisory

Timeline

Published: Nov 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23718?

The package ssrf-agent before 1.0.5 are vulnerable to Server-side Request Forgery (SSRF) via the defaultIpChecker function. It fails to properly validate if the IP requested is private.

How severe is CVE-2021-23718?

CVE-2021-23718 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23718?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23718?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST